NEW YORK — A video of Amy Winehouse shows the Grammy-nominated singer smoking … something. In grainy footage obtained by British tabloid The Sun, Winehouse, 24, is seen inhaling fumes from some sort of pipe reportedly hours before showing up for husband Blake Fielder-Civil’s court appearance in London on Friday. Winehouse, who dyed her hair blond and ditched her signature black hair done up in a beehive hairdo, can be seen walking around. She sits down and, before lighting the pipe, can be heard saying that she’s “had about six Valium.” Her publicist, Tracey Miller, declined to comment Tuesday.